java中poi进行execl导出

首先贴出最终导出的execl截图吧:

前台界面如下:

点击导出时,为其按钮的onclick事件添加exportDate()函数:

function exportDate(){
            var begin_Date=$('#dateid').datebox('getValue');
            document.getElementById("exportForm").action="../mobileManage/export.do?begin_Date="+begin_Date;
            document.getElementById("exportForm").submit();
        }

在后台export.do的代码如下:

@RequestMapping("export.do")
    public void exportExecl(HttpServletRequest request,
            HttpServletResponse response) {
        String beginDate = request.getParameter("dateid")+"-01";
        int maxDay=getCurrMonthDays(beginDate);
        List<MobileManage> list = getDataList(beginDate);
        String title =beginDate.substring(0, 4)+"年"+beginDate.subSequence(5, 7)+"月"+ "员工工作详情表";
        String[] headers1 = new String[33];// 表头1数组   日期,1,2,3...
        String[] headers2 = new String[31];// 表头2数组      星期,一二三...
        headers1[0]="类型";
        headers1[1]="姓名";
        for (int i = 1; i <=maxDay; i++) {
            String date=beginDate.substring(0,8)+(i<10?"0"+i:i+"");
            String week=getWeek(date);
            headers1[i+1]=i+"";
            headers2[i-1]=week;
        }
        HSSFWorkbook workbook = new HSSFWorkbook();// 生成一个工作簿
        HSSFSheet sheet = workbook.createSheet(title);//创建一个表
        HSSFCellStyle style = workbook.createCellStyle();//创建一个居中格式
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 水平
        style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直 
        sheet.setDefaultColumnWidth(5);//设置默认列宽
        sheet.setColumnWidth(0, 10* 256);//设置第一、第二列列宽
        sheet.setColumnWidth(1, 10 * 256);
        sheet.setDefaultRowHeight((short)300);//设置默认行高
        HSSFRow row = sheet.createRow(0);//创建表头一
        sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, 0));  //设置跨行
        sheet.addMergedRegion(new CellRangeAddress(0, 1, 1, 1));  
        HSSFRow rowWeek=sheet.createRow(1);//创建表头二
        HSSFCell cell = null;
        //给表头填充数据
        for (int i = 0; i < headers1.length; i++) {
            cell = row.createCell(i);
            cell.setCellValue(headers1[i]);
            cell.setCellStyle(style);
        }
        for (int i = 0; i < headers2.length; i++) {
            cell=rowWeek.createCell(i+2);
            cell.setCellValue(headers2[i]);
            cell.setCellStyle(style);
        }
        // 遍历集合数据，产生数据行
        MobileManage manage = null;
        int index = 1;
        // 循环写入行
        for (int i = 0; i < list.size(); i++) {
            index++;
            row = sheet.createRow(index);//从第二行开始填充数据(第零和一行是表头)
            manage = list.get(i);
            cell = row.createCell(0);// 类型
            cell.setCellValue(manage.getType());
            cell = row.createCell(1);//姓名
            cell.setCellValue(manage.getName());
            for (int j = 0; j < headers2.length; j++) {//项目编码
                cell=row.createCell(j+2);
                cell.setCellValue(manage.getDateCodes()[j]==null?"":manage.getDateCodes()[j].getCode());
            }
        }
        response.reset();
        try {
            title=new String(title.getBytes("gb2312"),"iso8859-1");//设置表格名时中文乱码,进行转码
        } catch (UnsupportedEncodingException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        response.setContentType("application/vnd.ms-excel;charset=utf-8");
        response.setHeader("Content-Disposition", "attachment;filename="
                + title + ".xls");
        try {
            OutputStream outputStream = response.getOutputStream();
            workbook.write(outputStream);
            outputStream.flush();
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return;
    }

我在网上看到很多人说这里面涉及到设置的一般都要加个short强转,但是我这样写在火狐谷歌导出并没有什么问题,当然也许不同浏览器等或许会出现问题,以后要是遇到了再说吧.